Predicting the Orioles' Opening Day roster

Arrieta has shown no negative effects from last season's elbow surgery. The team believes he has the arsenal and makeup to be a top-line starter. He will have the chance to show it.

Arrieta has shown no negative effects from last season's elbow surgery. The team believes he has the arsenal and makeup to be a top-line starter. He will have the chance to show it. (US Presswire photo)

Hunter came into camp much slimmer, but his spring back issues are a concern, especially considering he missed the first three months of last season before his trade to the Orioles in July.

Hunter came into camp much slimmer, but his spring back issues are a concern, especially considering he missed the first three months of last season before his trade to the Orioles in July. (Baltimore Sun photo by Karl Merton Ferron)

Obtained from the Colorado Rockies in the Jeremy Guthrie trade, he's the Orioles' most-experienced starter in terms of major league service time. He has pitched in the American League East before, too.

Obtained from the Colorado Rockies in the Jeremy Guthrie trade, he's the Orioles' most-experienced starter in terms of major league service time. He has pitched in the American League East before, too. (US Presswire photo)

The 2008 No. 4 overall pick has had an up-and-down spring in trying to rebound from last year's struggles. He's in better shape, appears focused and threw four scoreless innings in back-to-back spring starts but had also had his share of rough outings.

The 2008 No. 4 overall pick has had an up-and-down spring in trying to rebound from last year's struggles. He's in better shape, appears focused and threw four scoreless innings in back-to-back spring starts but had also had his share of rough outings. (Baltimore Sun photo by Karl Merton Ferron)

It's a month into Orioles spring training. The team's clubhouse at the Ed Smith Stadium complex is a little roomier after a couple of rounds of roster cuts. But projecting the Orioles' Opening Day roster still offers its share of questions. How will the rotation shake out? Who will be in the...